Well, the only thing separating our internal IPs from the NIC on the firewall box is Packeteer. I'm not sure if it would be considered a proxy arp, although it sounds like it might. Packeteer does our bandwidth shaping/control. If it is a proxy arp, is there any way I can get the MAC addresses logged? Basically, we have our firewall not logging anything right now. I suppose the addition of any logging would be better, but everyone gets a dynamic DHCP address. If I needed to track something down in the log, I really couldn't tie it to a computer at all. Any ideas? Khanh Tran Network Operations Sarah Lawrence College -----Original Message----- From: Sascha Reissner [mailto:sascha.reissner@toxicnet.de] Sent: Saturday, February 01, 2003 5:49 PM To: Khanh Tran; netfilter@lists.samba.org Subject: Re: netfilter/iptables LOG not logging MAC addresses > It's logging just fine and showing up in my logs, but it's missing the MAC > address. I've seen the MAC address show up in logs from other peoples' > posts and such. Am I missing a log option switch? Possibly something not > compiled in my kernel? Not loading a module? Thanks in advance... maybe the logged stuff doesnt come from any adjacent computer... you will only see MAC addresses of directly connected computers, or machines behind a machine that runs any sort of proxy arp. if that is not the case then a MAC address will get discarded at the next hop